He estado leyendo el manual de mi amplificador y me recomienda que para un solo altavoz use 8ohm
SPEAKER JACKS One 8-ohm and two 4-ohm speaker jacks are provided on the 50 Plus. Use the
8-ohm jack for maximum power and clarity with the enclosed 12" speaker (if combo version) or when
using a single MESA one-twelve or four-twelve cabinet. Use the 4-ohm jack(s) when using two 8-ohm
speakers or two 8-ohm cabinets, or when using a single MESA two-twelve cabinet (as these are
4-ohm cabs).
Que podéis decirme?
Saludos!